help cities like Miami build infrastructure that can help them live below sea level, too
Miami is in a terrible position, geologically, because it’s built on top of porous rock:
Can We Build Levees Around Miami? -- This works for places like New Orleans and The Netherlands because these places are built on top of dense clay so the water cannot percolate through the ground easily. In the case of Miami, water is not just coming up on the beach, it is coming through the ground below us because we are built on top of limestone that is full of holes. So even if we built walls on the coast, the water will just creep in under the walls through the limestone. -- http://highwaterline.org/sea-level-rise-faqs/
Miami is in a terrible position, geologically, because it’s built on top of porous rock: